Iowa Division of Criminal Investigation

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Iowa Division of Criminal Investigation Welcome to the official page of the Iowa Division of Criminal Investigation, a Division of the Iowa Department of Public Safety.

This is the official page of the Iowa Division of Criminal Investigation, which provides investigative services to the people of Iowa, maintaining the highest professional and ethical standards that guilt should not escape nor innocence suffer. The DCI is a division under the Iowa Department of Public Safety. REMINDER: This page is NOT an emergency response page. If you have an emergency, please call 911. The Division of Criminal Investigation includes the following bureaus and working units:

Field Operations Bureau: This bureau is best known as Iowa's "Detective Bureau." Major Crime Unit - Conducts and coordinates investigations with local law enforcement. Technology Support - Provides technology support for investigations involving mobile devices and digital media. Missing Persons and Unidentified Bodies - Assists in locating missing persons. Support Operations Bureau: This bureau provides administrative support for DCI. Staff collect, maintain, and provide information to law enforcement and the public. Administrative Support & Transcription

Records & Identification

Automated Biometric Identification System/Fingerprints

Dissemination

S*x Offender Registry

DCI Crime Lab: The Crime Lab provides thorough, accurate, and confidential handling of materials resulting in information that assists the criminal justice community in reaching informed decisions. Special Enforcement Operations Bureau: This bureau ensures public confidence and trust in Iowa's gaming industry. Cyber Crime Bureau: This bureau investigates crimes with a significant cyber, technological, or digital nexus. The Iowa DCI page is not the appropriate venue to make complaints about individuals, businesses or organizations, Iowa DPS, or otherwise. This site does not accept requests for public information under Iowa Open Records Statutes. Instead, please use our resources and guidelines at the bottom of the page. This is an open forum, and Iowa DCI welcomes your participation. Keep in mind this is a family-friendly page, so please keep comments and wall posts clean. We ask that you follow our page guidelines. We do not discriminate against any views but will remove any posts that violate the guidelines listed below:

- You participate at your own risk, taking personal responsibility for your comments, your username, and any information provided. Users who repeatedly violate the guidelines may be blocked from the Iowa DCI page.

- No graphic, obscene, explicit, or racial comments or submissions will be allowed, nor will comments that are abusive, threatening and/or hateful or intended to defame anyone or any organization.

- No solicitations or advertisements. This includes promotion or endorsement of any financial, commercial, non-government agencies and political views. Similarly, we do not allow attempts to defame or defraud any financial, commercial, or non-government agencies.

- No copyrighted or trademarked images or graphics.

- No comments or photos that suggest or encourage illegal activity.

- Apparent spam will be removed and may cause the author(s) to be blocked from the page without notice. The Iowa DCI will make every effort to monitor the contents of this page and ensure its content is of an appropriate nature. The appearance of external links on this site does not constitute official endorsement on behalf of the DCI or Iowa Department of Public Safety. Only those explicitly authorized can post comments on behalf of the Department. To request information or records, please email [email protected].

On May 28, 2025, the Howard County Sheriff’s Office received a 911 call from Mark Michael Zweibohmer, 49, to conduct a w...
10/16/2026

On May 28, 2025, the Howard County Sheriff’s Office received a 911 call from Mark Michael Zweibohmer, 49, to conduct a welfare check at his residence in rural Elma, Iowa. When law enforcement arrived on scene, Zweibohmer began shooting at responding officers. No injuries were sustained by the responding officers or Zweibohmer. Zweibohmer was arrested and charged with four counts of Attempt to Commit Murder of a Peace Officer.
On October 15, 2026, a Howard County jury found Zweibohmer, GUILTY on all four counts.
The outcome of this case is a result of great collaboration - Howard County Sheriff's Office, Howard County Attorney's Office, Iowa Attorney General's Office, Iowa State Patrol, DCI, Winneshiek County Sheriff's Office and assisting agencies.

New information regarding a 1995 murder in Waterloo, IA leads to the arrest of a Minnesota man (photo below). When agenc...
10/16/2026

New information regarding a 1995 murder in Waterloo, IA leads to the arrest of a Minnesota man (photo below).
When agencies call on DCI to assist, our agents bring specialized investigative experience, technology, and fresh perspectives to help pursue new leads and revisit old evidence.
For cases that remain unsolved - new information, advances in forensic science, and continued collaboration can create new opportunities to seek the truth.
Because every victim matters. Every lead matters. And every family deserves our best effort. Link to Black Hawk County Sheriff's Office press release below.
https://dps.iowa.gov/media/3300/download?inline

When a critical incident occurs, communities deserve answers rooted in fact. So far this year, the Iowa Division of Crim...
10/12/2026

When a critical incident occurs, communities deserve answers rooted in fact. So far this year, the Iowa Division of Criminal Investigation (DCI) has responded to 18 officer-involved shooting investigations across the state.
DCI agents bring specialized investigative experience with the sole goal of getting to the truth. It is difficult work, but their responsibility is always to follow the facts and provide prosecutors with the information they need to independently review what occurred. ⚖️

Congratulations to Special Agent in Charge (SAC) Scott Lamp on his retirement after 32 years of dedicated service in rol...
10/06/2026

Congratulations to Special Agent in Charge (SAC) Scott Lamp on his retirement after 32 years of dedicated service in roles across the Department of Public Safety.
SAC Lamp began his career with DCI’s Special Enforcement Operations Bureau (SEOB) in 1994, where he spent 13 years in various roles around the state. In 2007, he began working with the S*x Offender Registry and part-time with the Internet Crimes Against Children Task Force. He finished his career as a Special Agent in Charge with DCI’s Support Operations Bureau.
Thank you for your leadership and commitment to public safety!
If you’re ready to begin your own journey in public service, learn more about joining our team at DPSCareers.com.

For the past two weeks, DCI Major Crime Unit leaders have been training DPS agents and local law enforcement partners to...
10/02/2026

For the past two weeks, DCI Major Crime Unit leaders have been training DPS agents and local law enforcement partners to prepare for some of the most complex and difficult investigations they may face.
A case agent can’t guarantee the outcome of the justice system. But they can conduct a thorough investigation and help families understand the many “whys” along the way.
Training together today means that when our local partners call tomorrow, we’re ready to work together in pursuit of justice for victims and families.

⚖️Fourteen individuals are facing federal charges following a joint federal and state investigation into a methamphetami...
09/25/2026

⚖️Fourteen individuals are facing federal charges following a joint federal and state investigation into a methamphetamine trafficking and money laundering organization.
DPS's Division of Narcotics Enforcement (DNE) worked alongside federal, state and local law enforcement partners throughout the investigation. On September 22, investigators executed 10 federal search warrants in Marshalltown, Perry and Des Moines, resulting in 11 arrests and the seizure of more than $21,000, six fi****ms and 18 phones.
The charges include conspiracy to distribute methamphetamine, distribution of methamphetamine and conspiracy to commit money laundering.
Complex investigations like this require strong partnerships at every level. We’re proud of the work of our DNE agents and the many law enforcement partners who worked together to disrupt illegal drug trafficking in Iowa and help keep our communities safe.
An indictment is an allegation. All defendants are presumed innocent unless and until proven guilty beyond a reasonable doubt in a court of law.

It’s National Forensic Science Week! Join us in celebrating the skilled professionals at the DCI Crime Lab who transform...
09/21/2026

It’s National Forensic Science Week! Join us in celebrating the skilled professionals at the DCI Crime Lab who transform evidence into answers and help deliver justice for Iowans.
Whether they’re analyzing substances, examining fi****ms, or testing blood alcohol levels, our forensic scientists are at the heart of every investigation—working behind the scenes to uncover the truth and keep our communities safe.
We’re grateful for their expertise, dedication, and commitment to public safety. Want to see how science supports justice in Iowa? Learn more about the vital work happening inside the DCI Crime Lab at the link below.
https://ow.ly/Vj5c50ZHZcs

We’re celebrating our incredible DCI Laboratory summer interns; Jayde, Kara, Rachel, Ashley, and Emma! Their passion, de...
09/09/2026

We’re celebrating our incredible DCI Laboratory summer interns; Jayde, Kara, Rachel, Ashley, and Emma! Their passion, dedication, and hard work made a real impact on our team and the important work we do for Iowa.
From hands-on lab research to presenting on critical topics like breath alcohol testing and gun destruction, these future scientists have gone above and beyond. Join us in congratulating them and wishing them success as they take the next steps in their careers!
DCI Lab internships offer real-world experience for upper-level college students in chemistry, biology, or related fields.
Learn more about areas of interest within the DCI Lab at the link below.
https://ow.ly/5mq150ZIjon

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215 East 7th Street
Des Moines, IA
50319

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